Question

how many molecules are present in substance of mass x gram​

Answer 1

The molar mass is defined as the mass in grams of 1 mol of that substance. One mole of isotopically pure carbon-12 has a mass of 12 g. ... That is, the molar mass of a substance is the mass (in grams per mole) of 6.022 × 10 23 atoms, molecules, or formula units of that substance.

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Answer 2

hi dude

In chemistry, a mole is a quantity unit that stands for the amount of a given substance. Since one mole of any chemical compound always contains 6.022 x 10^23 molecules, you can calculate the number of molecules of any substance if you know its mass and its chemical formula

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